[R] modify the levels of a variable
cheelee7 at gmail.com
Wed Mar 10 22:35:35 CET 2010
If anyone can help with this, I would greatly appreciate it.
When I subset a dataframe, and then create a table of on of the column
variables, the levels of that variable are retained from the parent
dataframe. Anyone know how to
for example, say I have data like so:
if I do....
I get the new data frame:
but if I do this...
I would get this:
additionally when I write...
Factors w/ 2 levels: "a", "b"
I want it to be...
Factors w/ 1 level: "a"
Normally I would just move on and won't even bother but I'm working with a
variable that has 204 levels and only 84 of those are meaningful to me. How
can I reset the levels of a column variable? help please! Thanks!
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